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7da17ad41e
The previous test configuration made it difficult to run a single test with the pytest CLI. There were two major issues: - The Tests directory was not a package. It now includes a __init__.py file and imports from other tests modules are done with relative imports. - setup.cfg always specified the Tests directory. So even if a specific test were specified as a CLI arg, this configuration would also always include all tests. This configuration has been removed to allow specifying a single test on the command line. Contributors can now run specific tests with a single command such as: $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb This makes it easy and faster to iterate on a single test failure and is very familiar to those that have previously used tox and pytest. When running tox or pytest with no arguments, they still discover and runs all tests in the Tests directory.
117 lines
3.1 KiB
Python
117 lines
3.1 KiB
Python
from io import BytesIO
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from .helper import unittest, PillowTestCase
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from PIL import Image, DdsImagePlugin
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TEST_FILE_DXT1 = "Tests/images/dxt1-rgb-4bbp-noalpha_MipMaps-1.dds"
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TEST_FILE_DXT3 = "Tests/images/dxt3-argb-8bbp-explicitalpha_MipMaps-1.dds"
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TEST_FILE_DXT5 = "Tests/images/dxt5-argb-8bbp-interpolatedalpha_MipMaps-1.dds"
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TEST_FILE_DX10_BC7 = "Tests/images/bc7-argb-8bpp_MipMaps-1.dds"
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class TestFileDds(PillowTestCase):
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"""Test DdsImagePlugin"""
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def test_sanity_dxt1(self):
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"""Check DXT1 images can be opened"""
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target = Image.open(TEST_FILE_DXT1.replace('.dds', '.png'))
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im = Image.open(TEST_FILE_DXT1)
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im.load()
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self.assertEqual(im.format, "DDS")
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self.assertEqual(im.mode, "RGBA")
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self.assertEqual(im.size, (256, 256))
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self.assert_image_equal(target.convert('RGBA'), im)
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def test_sanity_dxt5(self):
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"""Check DXT5 images can be opened"""
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target = Image.open(TEST_FILE_DXT5.replace('.dds', '.png'))
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im = Image.open(TEST_FILE_DXT5)
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im.load()
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self.assertEqual(im.format, "DDS")
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self.assertEqual(im.mode, "RGBA")
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self.assertEqual(im.size, (256, 256))
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self.assert_image_equal(target, im)
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def test_sanity_dxt3(self):
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"""Check DXT3 images can be opened"""
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target = Image.open(TEST_FILE_DXT3.replace('.dds', '.png'))
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im = Image.open(TEST_FILE_DXT3)
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im.load()
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self.assertEqual(im.format, "DDS")
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self.assertEqual(im.mode, "RGBA")
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self.assertEqual(im.size, (256, 256))
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self.assert_image_equal(target, im)
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def test_dx10_bc7(self):
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"""Check DX10 images can be opened"""
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target = Image.open(TEST_FILE_DX10_BC7.replace('.dds', '.png'))
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im = Image.open(TEST_FILE_DX10_BC7)
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im.load()
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self.assertEqual(im.format, "DDS")
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self.assertEqual(im.mode, "RGBA")
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self.assertEqual(im.size, (256, 256))
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self.assert_image_equal(target, im)
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def test__validate_true(self):
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"""Check valid prefix"""
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# Arrange
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prefix = b"DDS etc"
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# Act
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output = DdsImagePlugin._validate(prefix)
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# Assert
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self.assertTrue(output)
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def test__validate_false(self):
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"""Check invalid prefix"""
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# Arrange
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prefix = b"something invalid"
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# Act
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output = DdsImagePlugin._validate(prefix)
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# Assert
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self.assertFalse(output)
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def test_short_header(self):
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""" Check a short header"""
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with open(TEST_FILE_DXT5, 'rb') as f:
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img_file = f.read()
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def short_header():
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Image.open(BytesIO(img_file[:119]))
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self.assertRaises(IOError, short_header)
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def test_short_file(self):
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""" Check that the appropriate error is thrown for a short file"""
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with open(TEST_FILE_DXT5, 'rb') as f:
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img_file = f.read()
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def short_file():
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im = Image.open(BytesIO(img_file[:-100]))
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im.load()
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self.assertRaises(IOError, short_file)
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if __name__ == '__main__':
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unittest.main()
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